UN Secretary General Antonio Guterres sent a letter Tuesday to Israeli Prime Minister Benjamin Netanyahu protesting a new law that could effectively cripple the UN agency responsible for aiding Palestinian refugees (UNRWA). The regulations approved by the Israeli parliament ban the UN agency from operating in Israel and occupied east Jerusalem, and prevent it from communicating and coordinating with Israeli authorities, which could essentially end its work in Gaza and the occupied West Bank. Israel has long been at odds with UNRWA and has alleged thatsome of its employees were involved in the …